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4.5 points: Fill in the blanks from the word list below. are used to switch currents over 30 amps. DC current switching requires a special design because of CONTACTORS HALL EFFECT DEVICES ARCING TUNNEL DIODES TRANSIENTS TENDENCY TOWARD OSCILLATION HIGH THERMAL RESISTANCE OPTO-ISOLATORS NEGATIVE RESISTANCE 9. 15 points: Using the proper symbols, draw a ladder diagram for a PLC that implements all of the following functions: Light lamp 2 if (switch 3 is closed and switch 4 is closed) or if (switch 5 is closed). Run motor 1 if switch 6 is closed or switch 7 is closed and switch 1 is closed. Also show an emergency stop switch in this rung of the ladder. This was \"not required to be handed in\" homework. 10. Fill in the blanks (write the word) from the word list below (next page): In order to be fully familiar with (or to specify) your CNC machine, you need to know: What is the machine's RPM? How many ranges does the machine have? What is the spindle and axis drive motor ? What is the maximum distance in each axis? How many can the machine hold? What is the machine's fastest rate? What is the machine's fastest cutting rate?

          4.5 points: Fill in the blanks from the word list below.
are used to switch
currents over 30 amps. DC current switching requires a special design because of
CONTACTORS HALL EFFECT DEVICES
ARCING TUNNEL DIODES
TRANSIENTS TENDENCY TOWARD OSCILLATION
HIGH THERMAL RESISTANCE OPTO-ISOLATORS
NEGATIVE RESISTANCE
9. 15 points: Using the proper symbols, draw a ladder diagram for a PLC that implements all of the
following functions:
Light lamp 2 if (switch 3 is closed and switch 4 is closed) or if (switch 5 is closed). Run motor 1 if
switch 6 is closed or switch 7 is closed and switch 1 is closed. Also show an emergency stop switch in
this rung of the ladder. This was \"not required to be handed in\" homework.
10. Fill in the blanks (write the word) from the word list below (next page): In order to be fully
familiar with (or to specify) your CNC machine, you need to know:
What is the machine's RPM?
How many ranges does the machine have?
What is the spindle and axis drive motor ?
What is the maximum distance in each axis?
How many can the machine hold?
What is the machine's fastest rate?
What is the machine's fastest cutting rate?

4.5 points: Fill in the blanks from the word list below.
are used to switch
currents over 30 amps. DC current switching requires a special design because of
CONTACTORS HALL EFFECT DEVICES
ARCING TUNNEL DIODES
TRANSIENTS TENDENCY TOWARD OSCILLATION
HIGH THERMAL RESISTANCE OPTO-ISOLATORS
NEGATIVE RESISTANCE
9. 15 points: Using the proper symbols, draw a ladder diagram for a PLC that implements all of the
following functions:
Light lamp 2 if (switch 3 is closed and switch 4 is closed) or if (switch 5 is closed). Run motor 1 if
switch 6 is closed or switch 7 is closed and switch 1 is closed. Also show an emergency stop switch in
this rung of the ladder. This was n̈ot required to be handed inḧomework.
10. Fill in the blanks (write the word) from the word list below (next page): In order to be fully
familiar with (or to specify) your CNC machine, you need to know:
What is the machine's RPM?
How many ranges does the machine have?
What is the spindle and axis drive motor ?
What is the maximum distance in each axis?
How many can the machine hold?
What is the machine's fastest rate?
What is the machine's fastest cutting rate?

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